Considering that Mark Twain is Samuel Clemens, I have always found it amazing that very few people know that Samuel Clemens was a writer, since almost everybody knows that Mark Twain was one.
Your task
Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.
Common trap
Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.
Winning move
Predict what a right answer must do, then test each choice against the conclusion-evidence gap.